Installation | 15
CAUTION
Cable and fuse sizes are specified by various codes and standards which depend on the type of
vehicle the Battery Charger is installed into. Selecting the wrong cable or fuse size could result in
harm to the installer or user and/or damage to the Battery Charger or other equipment installed
in the system. The installer is responsible for ensuring that the correct cable and fuse sizes are
used when installing this Battery Charger.
Cabling is recommended to be away from heat sources and in protected areas, especially when
installing or routing in the engine bay.
2.5 Wiring
The heavy gauge wires on the BCDC1225D / BCDC1240D / BCDC1250D unit carry peak currents
of up to 55 A and it is important to make a good, low resistance electrical connection that will
not degrade over time. Failure to make a good reliable contact may result in breakdown of the
wire insulation and cause a short circuit, or worst case a fire. We recommend that this activity be
undertaken by an appropriately trained person.
REDARC recommends using a soldered butt splice crimp connection (see
that is covered with heatshrink. REDARC does not recommend using
standard red/blue/yellow blade connections, as they are not rated for either the current required or
gauge of wire supplied on the unit.
Crimping provides good mechanical connection, soldering provides a long lasting electrical
connection and forming of the heatshrink will prevent any shorting/contact with your vehicle chassis.
Figure 2.5.1:
Ensuring a good wiring connection
Crimp
both wires to the butt splice using
single-indent type crimpers. Fold the cable over
before inserting into the butt-splice as required.
Single-indent crimpers should also be used on
any lugs used.
Solder
the wires to the butt splice. Ensure that
a good connection is made.
Keep heatshrink away until after soldering is
complete and has cooled.
